Commit | Line | Data |
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9245bd0e DG |
1 | /* |
2 | * Copyright (C) 2014 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
9245bd0e DG |
19 | #include <assert.h> |
20 | #include <string.h> | |
a2a75fa4 | 21 | #include <limits.h> |
9245bd0e DG |
22 | |
23 | #include <lttng/lttng-error.h> | |
24 | #include <lttng/load.h> | |
25 | #include <lttng/load-internal.h> | |
26 | #include <common/sessiond-comm/sessiond-comm.h> | |
f40ef1d5 | 27 | #include <common/config/session-config.h> |
a2a75fa4 JR |
28 | #include <common/uri.h> |
29 | #include <common/macros.h> | |
30 | #include <common/compat/string.h> | |
9245bd0e DG |
31 | |
32 | #include "lttng-ctl-helper.h" | |
33 | ||
34 | struct lttng_load_session_attr *lttng_load_session_attr_create(void) | |
35 | { | |
36 | return zmalloc(sizeof(struct lttng_load_session_attr)); | |
37 | } | |
38 | ||
a2a75fa4 JR |
39 | static |
40 | void reset_load_session_attr_urls(struct lttng_load_session_attr *attr) | |
41 | { | |
42 | free(attr->raw_override_url); | |
43 | free(attr->raw_override_path_url); | |
44 | free(attr->raw_override_ctrl_url); | |
45 | free(attr->raw_override_data_url); | |
46 | free(attr->override_attr.path_url); | |
47 | free(attr->override_attr.ctrl_url); | |
48 | free(attr->override_attr.data_url); | |
49 | } | |
50 | ||
9245bd0e DG |
51 | void lttng_load_session_attr_destroy(struct lttng_load_session_attr *attr) |
52 | { | |
53 | if (attr) { | |
a2a75fa4 | 54 | reset_load_session_attr_urls(attr); |
9245bd0e DG |
55 | free(attr); |
56 | } | |
57 | } | |
58 | ||
59 | const char *lttng_load_session_attr_get_session_name( | |
60 | struct lttng_load_session_attr *attr) | |
61 | { | |
62 | const char *ret = NULL; | |
63 | ||
64 | if (attr && attr->session_name[0]) { | |
65 | ret = attr->session_name; | |
66 | } | |
67 | ||
68 | return ret; | |
69 | } | |
70 | ||
71 | const char *lttng_load_session_attr_get_input_url( | |
72 | struct lttng_load_session_attr *attr) | |
73 | { | |
74 | const char *ret = NULL; | |
75 | ||
76 | if (attr && attr->input_url[0]) { | |
77 | ret = attr->input_url; | |
78 | } | |
79 | ||
80 | return ret; | |
81 | } | |
82 | ||
83 | int lttng_load_session_attr_get_overwrite( | |
84 | struct lttng_load_session_attr *attr) | |
85 | { | |
86 | return attr ? attr->overwrite : -LTTNG_ERR_INVALID; | |
87 | } | |
88 | ||
a2a75fa4 JR |
89 | const char *lttng_load_session_attr_get_override_path_url( |
90 | struct lttng_load_session_attr *attr) | |
91 | { | |
92 | const char *ret = NULL; | |
93 | ||
94 | if (attr && attr->override_attr.path_url) { | |
95 | ret = attr->raw_override_path_url; | |
96 | } | |
97 | ||
98 | return ret; | |
99 | } | |
100 | ||
101 | const char *lttng_load_session_attr_get_override_ctrl_url( | |
102 | struct lttng_load_session_attr *attr) | |
103 | { | |
104 | const char *ret = NULL; | |
105 | ||
106 | if (attr && attr->override_attr.ctrl_url) { | |
107 | ret = attr->raw_override_ctrl_url; | |
108 | } | |
109 | ||
110 | return ret; | |
111 | } | |
112 | ||
113 | const char *lttng_load_session_attr_get_override_data_url( | |
114 | struct lttng_load_session_attr *attr) | |
115 | { | |
116 | const char *ret = NULL; | |
117 | ||
118 | if (attr && attr->override_attr.data_url) { | |
119 | ret = attr->raw_override_data_url; | |
120 | } | |
121 | ||
122 | return ret; | |
123 | } | |
124 | ||
125 | const char *lttng_load_session_attr_get_override_url( | |
126 | struct lttng_load_session_attr *attr) | |
127 | { | |
128 | const char *ret = NULL; | |
129 | ||
130 | if (attr && (attr->override_attr.path_url || | |
131 | (attr->override_attr.ctrl_url && | |
132 | attr->override_attr.data_url))) { | |
133 | ret = attr->raw_override_url; | |
134 | } | |
135 | ||
136 | return ret; | |
137 | } | |
138 | ||
9245bd0e DG |
139 | int lttng_load_session_attr_set_session_name( |
140 | struct lttng_load_session_attr *attr, const char *session_name) | |
141 | { | |
142 | int ret = 0; | |
143 | ||
144 | if (!attr) { | |
145 | ret = -LTTNG_ERR_INVALID; | |
146 | goto error; | |
147 | } | |
148 | ||
149 | if (session_name) { | |
150 | size_t len; | |
151 | ||
152 | len = strlen(session_name); | |
36d2e35d | 153 | if (len >= LTTNG_NAME_MAX) { |
9245bd0e DG |
154 | ret = -LTTNG_ERR_INVALID; |
155 | goto error; | |
156 | } | |
157 | ||
158 | strncpy(attr->session_name, session_name, len); | |
159 | } else { | |
160 | attr->session_name[0] = '\0'; | |
161 | } | |
162 | error: | |
163 | return ret; | |
164 | } | |
165 | ||
166 | int lttng_load_session_attr_set_input_url( | |
167 | struct lttng_load_session_attr *attr, const char *url) | |
168 | { | |
169 | int ret = 0; | |
584e475e JR |
170 | size_t len; |
171 | ssize_t size; | |
9245bd0e DG |
172 | struct lttng_uri *uris = NULL; |
173 | ||
174 | if (!attr) { | |
175 | ret = -LTTNG_ERR_INVALID; | |
176 | goto error; | |
177 | } | |
178 | ||
179 | if (!url) { | |
180 | attr->input_url[0] = '\0'; | |
181 | ret = 0; | |
182 | goto end; | |
183 | } | |
184 | ||
185 | len = strlen(url); | |
186 | if (len >= PATH_MAX) { | |
187 | ret = -LTTNG_ERR_INVALID; | |
188 | goto error; | |
189 | } | |
190 | ||
191 | size = uri_parse_str_urls(url, NULL, &uris); | |
192 | if (size <= 0 || uris[0].dtype != LTTNG_DST_PATH) { | |
193 | ret = -LTTNG_ERR_INVALID; | |
194 | goto error; | |
195 | } | |
196 | ||
197 | /* Copy string plus the NULL terminated byte. */ | |
198 | lttng_ctl_copy_string(attr->input_url, uris[0].dst.path, | |
199 | sizeof(attr->input_url)); | |
200 | ||
201 | end: | |
202 | error: | |
203 | free(uris); | |
204 | return ret; | |
205 | } | |
206 | ||
207 | int lttng_load_session_attr_set_overwrite( | |
208 | struct lttng_load_session_attr *attr, int overwrite) | |
209 | { | |
210 | int ret = 0; | |
211 | ||
212 | if (!attr) { | |
213 | ret = -LTTNG_ERR_INVALID; | |
214 | goto end; | |
215 | } | |
216 | ||
217 | attr->overwrite = !!overwrite; | |
218 | end: | |
219 | return ret; | |
220 | } | |
221 | ||
a2a75fa4 JR |
222 | int lttng_load_session_attr_set_override_ctrl_url( |
223 | struct lttng_load_session_attr *attr, const char *url) | |
224 | { | |
225 | int ret = 0; | |
226 | ssize_t ret_size; | |
227 | struct lttng_uri *uri = NULL; | |
228 | char *url_str = NULL; | |
229 | char *raw_str = NULL; | |
230 | ||
231 | if (!attr) { | |
232 | ret = -LTTNG_ERR_INVALID; | |
233 | goto end; | |
234 | } | |
235 | ||
236 | if (attr->override_attr.path_url) { | |
237 | /* | |
238 | * FIXME: return a more meaningful error. | |
239 | * Setting a ctrl override after a path override make no | |
240 | * sense. | |
241 | * */ | |
242 | ret = -LTTNG_ERR_INVALID; | |
243 | goto end; | |
244 | } | |
245 | ||
246 | /* | |
247 | * FIXME: uri_parse should be able to take as parameter the protocol | |
248 | * type to validate "url". For now only check the parsing goes through; | |
249 | * it will fail later on. | |
250 | */ | |
251 | ret_size = uri_parse(url, &uri); | |
252 | if (ret_size < 0) { | |
253 | ret = -LTTNG_ERR_INVALID; | |
254 | goto end; | |
255 | } | |
256 | ||
257 | if (uri[0].port == 0) { | |
258 | uri[0].port = DEFAULT_NETWORK_CONTROL_PORT; | |
259 | } | |
260 | ||
261 | url_str = zmalloc(PATH_MAX); | |
262 | if (!url_str) { | |
263 | /* FIXME: return valid error */ | |
264 | ret = -LTTNG_ERR_NOMEM; | |
265 | goto end; | |
266 | } | |
267 | ||
268 | ret = uri_to_str_url(&uri[0], url_str, PATH_MAX); | |
269 | if (ret < 0) { | |
270 | ret = -LTTNG_ERR_INVALID; | |
271 | goto end; | |
272 | } | |
273 | ret = 0; | |
274 | ||
275 | raw_str = lttng_strndup(url, PATH_MAX); | |
276 | if (!raw_str) { | |
277 | ret = -LTTNG_ERR_NOMEM; | |
278 | goto end; | |
279 | } | |
280 | ||
281 | /* Squash old value if any */ | |
282 | free(attr->override_attr.ctrl_url); | |
283 | free(attr->raw_override_ctrl_url); | |
284 | ||
285 | /* Populate the object */ | |
286 | attr->override_attr.ctrl_url = url_str; | |
287 | attr->raw_override_ctrl_url = raw_str; | |
288 | ||
289 | /* Ownership passed to attr. */ | |
290 | url_str = NULL; | |
291 | raw_str = NULL; | |
292 | ||
293 | end: | |
294 | free(raw_str); | |
295 | free(url_str); | |
296 | free(uri); | |
297 | return ret; | |
298 | } | |
299 | ||
300 | int lttng_load_session_attr_set_override_data_url( | |
301 | struct lttng_load_session_attr *attr, const char *url) | |
302 | { | |
303 | int ret = 0; | |
304 | ssize_t ret_size; | |
305 | struct lttng_uri *uri = NULL; | |
306 | char *url_str = NULL; | |
307 | char *raw_str = NULL; | |
308 | ||
309 | if (!attr) { | |
310 | ret = -LTTNG_ERR_INVALID; | |
311 | goto end; | |
312 | } | |
313 | ||
314 | if (attr->override_attr.path_url) { | |
315 | ret = -LTTNG_ERR_INVALID; | |
316 | goto end; | |
317 | } | |
318 | ||
319 | /* | |
320 | * FIXME: uri_parse should be able to take as parameter the protocol | |
321 | * type to validate "url". For now only check the parsing goes through; | |
322 | * it will fail later on. | |
323 | */ | |
324 | ret_size = uri_parse(url, &uri); | |
325 | if (ret_size < 0) { | |
326 | ret = -LTTNG_ERR_INVALID; | |
327 | goto end; | |
328 | } | |
329 | ||
330 | if (uri[0].port == 0) { | |
331 | uri[0].port = DEFAULT_NETWORK_DATA_PORT; | |
332 | } | |
333 | ||
334 | url_str = zmalloc(PATH_MAX); | |
335 | if (!url_str) { | |
336 | ret = -LTTNG_ERR_NOMEM; | |
337 | goto end; | |
338 | } | |
339 | ||
340 | ret = uri_to_str_url(&uri[0], url_str, PATH_MAX); | |
341 | if (ret < 0) { | |
342 | ret = -LTTNG_ERR_INVALID; | |
343 | goto end; | |
344 | } | |
345 | ret = 0; | |
346 | ||
347 | raw_str = lttng_strndup(url, PATH_MAX); | |
348 | if (!raw_str) { | |
349 | ret = -LTTNG_ERR_NOMEM; | |
350 | goto end; | |
351 | } | |
352 | ||
353 | /* Squash old value if any */ | |
354 | free(attr->override_attr.data_url); | |
355 | free(attr->raw_override_data_url); | |
356 | ||
357 | /* Populate the object */ | |
358 | attr->override_attr.data_url = url_str; | |
359 | attr->raw_override_data_url = raw_str; | |
360 | ||
361 | /* Ownership passed to attr. */ | |
362 | url_str = NULL; | |
363 | raw_str = NULL; | |
364 | end: | |
365 | free(raw_str); | |
366 | free(url_str); | |
367 | free(uri); | |
368 | return ret; | |
369 | } | |
370 | ||
371 | int lttng_load_session_attr_set_override_url( | |
372 | struct lttng_load_session_attr *attr, const char *url) | |
373 | { | |
374 | int ret = 0; | |
375 | ssize_t ret_size; | |
376 | struct lttng_uri *uri = NULL; | |
377 | char *raw_url_str = NULL; | |
378 | char *raw_path_str = NULL; | |
379 | char *path_str = NULL; | |
380 | char *raw_ctrl_str = NULL; | |
381 | char *ctrl_str = NULL; | |
382 | char *raw_data_str = NULL; | |
383 | char *data_str = NULL; | |
384 | char buffer[PATH_MAX]; | |
385 | ||
386 | if (!attr || !url || strlen(url) >= PATH_MAX) { | |
387 | ret = -LTTNG_ERR_INVALID; | |
388 | goto end; | |
389 | } | |
390 | ||
391 | /* | |
392 | * FIXME: uri_parse should be able to take as parameter the protocol | |
393 | * type to validate "url". For now only check the parsing goes through; | |
394 | * it will fail later on. | |
395 | */ | |
396 | ret_size = uri_parse_str_urls(url, NULL, &uri); | |
397 | if (ret_size < 0 || ret_size > 2) { | |
398 | /* Unexpected URL format. */ | |
399 | ret = -LTTNG_ERR_INVALID; | |
400 | goto end; | |
401 | } | |
402 | ||
403 | raw_url_str = lttng_strndup(url, PATH_MAX); | |
404 | if (!raw_url_str) { | |
405 | ret = -LTTNG_ERR_NOMEM; | |
406 | goto end; | |
407 | } | |
408 | ||
409 | /* Get path | ctrl && data string URL. */ | |
410 | ret = uri_to_str_url(&uri[0], buffer, sizeof(buffer)); | |
411 | if (ret < 0 || ret >= PATH_MAX) { | |
412 | ret = -LTTNG_ERR_INVALID; | |
413 | goto end; | |
414 | } | |
415 | ret = 0; | |
416 | ||
417 | switch (uri[0].dtype) { | |
418 | case LTTNG_DST_PATH: | |
419 | raw_path_str = lttng_strndup(buffer, PATH_MAX); | |
420 | if (!raw_path_str) { | |
421 | ret = -LTTNG_ERR_NOMEM; | |
422 | goto end; | |
423 | } | |
424 | ||
425 | path_str = lttng_strndup(raw_path_str, PATH_MAX); | |
426 | if (!path_str) { | |
427 | ret = -LTTNG_ERR_NOMEM; | |
428 | goto end; | |
429 | } | |
430 | break; | |
431 | case LTTNG_DST_IPV4: | |
432 | case LTTNG_DST_IPV6: | |
433 | if (ret_size != 2) { | |
434 | ret = -LTTNG_ERR_INVALID; | |
435 | goto end; | |
436 | } | |
437 | ||
438 | raw_ctrl_str = lttng_strndup(buffer, PATH_MAX); | |
439 | if (!raw_ctrl_str) { | |
440 | ret = -LTTNG_ERR_NOMEM; | |
441 | goto end; | |
442 | } | |
443 | ||
444 | ctrl_str = lttng_strndup(raw_ctrl_str, PATH_MAX); | |
445 | if (!ctrl_str) { | |
446 | ret = -LTTNG_ERR_NOMEM; | |
447 | goto end; | |
448 | } | |
449 | ||
450 | /* Get the data uri. */ | |
451 | ret = uri_to_str_url(&uri[1], buffer, sizeof(buffer)); | |
452 | if (ret < 0) { | |
453 | ret = -LTTNG_ERR_INVALID; | |
454 | goto end; | |
455 | } | |
456 | ret = 0; | |
457 | ||
458 | raw_data_str = lttng_strndup(buffer, PATH_MAX); | |
459 | if (!raw_data_str) { | |
460 | ret = -LTTNG_ERR_NOMEM; | |
461 | goto end; | |
462 | } | |
463 | ||
464 | data_str = lttng_strndup(raw_data_str, PATH_MAX); | |
465 | if (!data_str) { | |
466 | ret = -LTTNG_ERR_NOMEM; | |
467 | goto end; | |
468 | } | |
469 | ||
470 | break; | |
471 | default: | |
472 | ret = -LTTNG_ERR_INVALID; | |
473 | goto end; | |
474 | } | |
475 | ||
476 | reset_load_session_attr_urls(attr); | |
477 | ||
478 | attr->override_attr.path_url = path_str; | |
479 | attr->override_attr.ctrl_url = ctrl_str; | |
480 | attr->override_attr.data_url = data_str; | |
481 | ||
482 | attr->raw_override_url = raw_url_str; | |
483 | attr->raw_override_path_url = raw_path_str; | |
484 | attr->raw_override_ctrl_url = raw_ctrl_str; | |
485 | attr->raw_override_data_url = raw_data_str; | |
486 | ||
487 | /* Pass data ownership to attr. */ | |
488 | raw_url_str = NULL; | |
489 | raw_path_str = NULL; | |
490 | path_str = NULL; | |
491 | raw_ctrl_str = NULL; | |
492 | ctrl_str = NULL; | |
493 | raw_data_str = NULL; | |
494 | data_str = NULL; | |
495 | ||
496 | end: | |
497 | free(raw_path_str); | |
498 | free(path_str); | |
499 | free(raw_ctrl_str); | |
500 | free(ctrl_str); | |
501 | free(raw_data_str); | |
502 | free(data_str); | |
503 | free(raw_url_str); | |
504 | free(uri); | |
505 | return ret; | |
506 | } | |
9245bd0e DG |
507 | /* |
508 | * The lttng-ctl API does not expose all the information needed to load the | |
509 | * session configurations. Thus, we must send a load command to the session | |
510 | * daemon which will, in turn, load its current session configuration. | |
511 | */ | |
512 | int lttng_load_session(struct lttng_load_session_attr *attr) | |
513 | { | |
514 | int ret; | |
18e29540 | 515 | const char *url, *session_name; |
9245bd0e DG |
516 | |
517 | if (!attr) { | |
518 | ret = -LTTNG_ERR_INVALID; | |
519 | goto end; | |
520 | } | |
521 | ||
18e29540 JG |
522 | url = attr->input_url[0] != '\0' ? attr->input_url : NULL; |
523 | session_name = attr->session_name[0] != '\0' ? | |
524 | attr->session_name : NULL; | |
525 | ||
526 | ret = config_load_session(url, session_name, attr->overwrite, 0); | |
9245bd0e DG |
527 | |
528 | end: | |
529 | return ret; | |
530 | } |